5000S Sedan L5-2226cc 2.22L SOHC (KZ) (1985)
If current NOT OK
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check altitude sensor
If current OK
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reconnect oxygen sensor
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recheck duty cycle
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duty cycle must remain within checking value of 28 ± 2%
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read current displayed on meter US 1119
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displayed current must fluctuate
If current DOES NOT fluctuate
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Check oxygen sensor
If current fluctuates
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turn ignition OFF
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reconnect crankcase ventilation and charcoal cannister hoses
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drive in new plug flush with mixture control unit
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remove CO meter and reattach cap to CO probe receptacle